Page 41 - Catalogue ANGLAIS 2016_Neat

4-20mA Multipoint borehole extensometer

CHARACTERISTICS

Measure Range :
0-31.75, 0-63.5, 0-127, 0-
219.5, 254 ou 508 mm

Accuracy :
0,2 à 1,3 mm (depending on
the range)

Resolution :
0,01 mm (depending on
reading unit)

Using Temperature :
-20 à +80°C
APPLICATIONS PPLICATIONS
A
The 4-20mA multipoint borehole extensometer is used Sealing (without head) :
to measure ground relative movement over a length IP68
greater than 2 meters.
Number of max points :
It is used for soil displacement measurement on several levels,
of rock deformation. It also allows monitoring of relative 6 points

movements of horizons between the lands of structures in Ext polyethylen sheath
contact with which they are placed. diameter :
33 mm

D Anchor diameter :
DESCRIPTIF ESCRIPTION
The 4-20mA multipoint extensometer consists of anchors, of 50 mm
fiberglass rods and a head in which are positioned 1 to 6

4-20mA sensors.
The connection between the anchor and the corresponding Advantages :
sensor is made with a fiber glass rod. All the sheathed rods and Quick installation
anchors and the head are integrally assembly in the workshop. Easy installation
The distances between anchor
Accessories :
s and head are preserved by adding elements to lock the system Cement tube
in place. Vent tube
These items will be grouted in the borehole and the head will be Read out unit
covered by the 4-20mA sensors from the right of each rod.

The installation is done by scrolling and inserting directly the
extensometer in the corresponding drilling. This sensor uses the
principle of operation of the current loop 4-20 mA, which allows
reading by a large number of device and controller.

This document in any case can be contractual. Géo-Instrumentation save the right to modify the products and leaf sheets without prior notice.
Géo-Instrumentation - S.A.S. au capital de 37000 € - RCS Créteil B502768427 – APE : 7490B - N°TVA : FR10502768427